WEIGHT LOSS (FINAL)

Question 1

what percent of Canadians are considered over-weight or obese?

Answer 1

65.5%

Question 2

obesity can create what kind of health risks?

Answer 2

• CVD
• cancer
• metabolic disturbances
• clinical depression/ anxiety
• increase chance of death
• decrease quality of life.

Question 3

when is weight loss recommended?

Answer 3

• Overweight + 1 indicator of increased CV risk OR
• Obese OR
• Waist circumference: males > 100 cm; females > 90 cm

Question 4

in order to loose 1 Ib of fat, how much energy expenditure must be used?

Answer 4

• 3500 kcal

(if we burn 5000 kcal, and consume 1500 kcal in food, we have a 3500 kcal deficit.)

Question 5

what is the difference between positive and negative energy balance?

Answer 5

POSITIVE
- this is weight gain, where we have a higher energy output than energy intake.

NEGATIVE
- this is weight loss, this is where we have a higher energy intake than energy output.

Question 6

what is severe calorie restriction?

Answer 6

• this is were calorie intake is restricted, doing this in a severe way can have negative effects like depression, reduced basal EE, decrease thyroid hormone.

Question 7

can someone loose weight from physical activity alone?

Answer 7

• physical activity alone will increase weight, as the individual uses exercise they will gain muscle which will increase weight. physical activity increases appetite which means the individual will eat more.

Question 8

what is the best way to loose fat?

Answer 8

• the use of physical activity, and severe caloric restriction used together is the most efficient way to loose weight because you cut down the calories coming in, but are able get calories to refuel but use the physical activity to help target fat.
• dietary diet change and physical activity is the most effective way to achieve weight loss.

Question 9

healthy weight loss is achieved by which factors?

Answer 9

• decrease in energy intake, and increase in physical activity.
• loss of 1-2 Ibs / week.
• need a energy deficit of 3500-7000 kcal/ week.

Question 10

what is a MET?

Answer 10

1 Met = 3.5ml/kg/min of O2 when at rest.

Question 11

moderate to vigourus is classified as how many METs?

Answer 11

• 3-6 METs

Question 12

how is VO2 measured?

Answer 12

• with a metobolic cart

Question 13

what are the benefits of using METs?

Answer 13

• simple for general public to understand
• METs are provided on most cardio EQM
• easy to calculate E.E. once you know your METs.

Question 14

what are the cons of using METs?

Answer 14

• assumes that 3.5ml/kg/min is everyones VO2 at rest
• does not take into account individual VO2max
• doesn’t include environment conditions.
• does not take into account body composition.